1. Create a letter of the appropriate type (Constituent, Action or Gift) in Config, setting up the associated export and letter so that it replicates the Write a Letter intro
    For example:
    Today's date (inserted from Word's Insert menu)
    <<Primary addressee>>
    <<Preferred address lines>>
    <<Preferred city>>, <<Preferred state>> <<Preferred ZIP>>

    Dear <<Primary salutation>>,
  2. Go to File, Page Setup, and set the appropriate margins
  3. Save and close the letter
  4. Use this letter from the Letter menu in place of the Write a Letter function